/* ============ page-about 专属样式 ============ */
.page-about {
  --page-gutter: 20px;
  --page-role-h: 224px;
  --page-concentric-w: 440px;
}

/* ---------- Hero ---------- */
.page-about__hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 82vh;
  padding: clamp(84px, 12vh, 128px) 0 56px;
  background: var(--night-blue-deep);
  color: var(--cream);
  overflow: hidden;
}
.page-about__hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-about__hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.5;
  mix-blend-mode: screen;
}
.page-about__hero-shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(115deg, rgba(14, 34, 54, 0.94) 12%, rgba(27, 58, 91, 0.78) 55%, rgba(27, 58, 91, 0.36) 100%);
}
.page-about__hero-container {
  position: relative;
  z-index: 2;
}
.page-about__breadcrumb {
  margin-bottom: var(--space-4);
}
.page-about__breadcrumb a,
.page-about__breadcrumb span {
  color: rgba(245, 239, 230, 0.78);
  font-size: 14px;
  text-decoration: none;
}
.page-about__breadcrumb a:hover,
.page-about__breadcrumb a:focus-visible {
  color: var(--orange);
}
.page-about__breadcrumb .c-breadcrumb__sep {
  color: rgba(245, 239, 230, 0.45);
}
.page-about__eyebrow {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-about__hero-title {
  margin: 0 0 var(--space-3);
}
.page-about__hero-brand {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--orange);
}
.page-about__hero-subtitle {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.6vw, 3.4rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
}
.page-about__lead {
  max-width: 660px;
  margin: 0 0 var(--space-4);
  font-size: 17px;
  line-height: 1.9;
  color: rgba(245, 239, 230, 0.85);
}
.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---------- 通用章节 ---------- */
.page-about__section {
  padding: var(--space-5) 0 var(--space-6);
}
.page-about__section-kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-about__section-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--ink);
}
.page-about__section-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mid-brown);
}
.page-about__section-head {
  margin-bottom: var(--space-4);
}
.page-about__section-title--light {
  color: var(--cream);
}
.page-about__section-note--light {
  color: rgba(245, 239, 230, 0.72);
}
.page-about__section-kicker--light {
  color: var(--orange);
}

/* 滚动对 spy 标题的激活标记 */
.page-about [data-spy][data-active] .page-about__section-title::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 1em;
  margin-inline-end: 8px;
  background: var(--red);
  vertical-align: -0.08em;
}

/* ---------- 品牌故事 ---------- */
.page-about__story-grid,
.page-about__team-grid,
.page-about__honor-grid,
.page-about__ecosystem-grid {
  align-items: start;
}
.page-about__story-lead {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}
.page-about__section--story p {
  margin: 0 0 var(--space-3);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
}
.page-about__manifesto {
  position: relative;
  margin: var(--space-4) 0 0;
  padding: var(--space-3) var(--space-4);
  max-width: 520px;
  border-left: 4px solid var(--red);
  background: rgba(214, 65, 47, 0.06);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
}
.page-about__manifesto::before {
  content: '“';
  position: absolute;
  top: 4px;
  left: 10px;
  font-size: 42px;
  color: var(--red);
  opacity: 0.35;
}

/* ---------- 发展历程 ---------- */
.page-about__section--timeline {
  background:
    radial-gradient(circle at 88% 18%, rgba(231, 122, 46, 0.10) 0, transparent 30%),
    radial-gradient(circle at 12% 85%, rgba(214, 65, 47, 0.10) 0, transparent 26%),
    var(--night-blue);
  color: var(--cream);
}
.page-about__timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  width: 100%;
  max-width: 100vw;
  padding: var(--space-4) var(--page-gutter);
  overflow: hidden;
}
.page-about__timeline-item {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  border-top: 2px solid rgba(231, 122, 46, 0.60);
  border-radius: var(--radius-m);
  background: rgba(245, 239, 230, 0.06);
  transition: border-color 0.4s var(--ease-standard), background 0.4s var(--ease-standard), box-shadow 0.4s var(--ease-standard);
}
.page-about__timeline-item:hover,
.page-about__timeline-item:focus-within,
.page-about__timeline-item[open] {
  border-top-color: var(--orange);
  background: rgba(245, 239, 230, 0.10);
  box-shadow: 0 8px 28px rgba(14, 34, 54, 0.24);
}
.page-about__timeline-head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
}
.page-about__timeline-head::-webkit-details-marker {
  display: none;
}
.page-about__timeline-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--orange);
  border: 2px solid var(--cream);
  box-shadow: 0 0 0 4px rgba(231, 122, 46, 0.18);
}
.page-about__timeline-year {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  color: var(--cream);
}
.page-about__timeline-event {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  color: rgba(245, 239, 230, 0.86);
}
.page-about__timeline-more {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(231, 122, 46, 0.16);
  color: var(--orange);
  font-size: 16px;
  line-height: 1;
  transition: background 0.3s var(--ease-standard), transform 0.3s var(--ease-standard);
}
.page-about__timeline-item[open] .page-about__timeline-more {
  transform: rotate(45deg);
  background: rgba(231, 122, 46, 0.3);
}
.page-about__timeline-body {
  padding: 0 var(--space-3) var(--space-3);
}
.page-about__timeline-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 239, 230, 0.78);
}
.page-about__timeline-update {
  margin: var(--space-2) 0 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--line-dark);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 239, 230, 0.72);
}

/* ---------- 团队与能力 ---------- */
.page-about__team-figure {
  margin: var(--space-4) 0 0;
}
.page-about__team-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-m);
  object-fit: cover;
  box-shadow: var(--shadow-card);
}
.page-about__team-figure figcaption {
  margin-top: var(--space-2);
  font-size: 13px;
  color: var(--mid-brown);
}
.page-about__roles {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.page-about__role-card {
  height: var(--page-role-h);
  perspective: 1200px;
  border-radius: var(--radius-m);
}
.page-about__role-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.6s var(--ease-out);
}
.page-about__role-card:hover .page-about__role-inner,
.page-about__role-card:focus-within .page-about__role-inner {
  transform: rotateY(180deg);
}
.page-about__role-face,
.page-about__role-back {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-m);
  padding: var(--space-3);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.page-about__role-face {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--line);
  background: var(--glass);
  color: var(--ink);
  box-shadow: var(--shadow-card);
}
.page-about__role-face p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mid-brown);
}
.page-about__role-back {
  transform: rotateY(180deg);
  background:
    radial-gradient(circle at 80% 10%, rgba(231, 122, 46, 0.22) 0, transparent 40%),
    var(--night-blue);
  color: var(--cream);
  box-shadow: var(--shadow-pop);
}
.page-about__role-back p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 239, 230, 0.86);
}
.page-about__role-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
}

/* ---------- 荣誉与认可 ---------- */
.page-about__section--honors {
  background:
    radial-gradient(circle at 16% 22%, rgba(231, 122, 46, 0.12) 0, transparent 28%),
    radial-gradient(circle at 84% 88%, rgba(214, 65, 47, 0.10) 0, transparent 26%),
    var(--night-blue);
  color: var(--cream);
}
.page-about__honor-figure {
  margin: 0 0 var(--space-4);
}
.page-about__honor-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow-glow);
}
.page-about__honor-award {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  font-weight: 800;
  line-height: 1.35;
  color: var(--cream);
}
.page-about__honor-desc {
  margin: 0 0 var(--space-3);
  font-size: 16px;
  line-height: 1.9;
  color: rgba(245, 239, 230, 0.78);
}
.page-about__honor-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}
.page-about__honor-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(245, 239, 230, 0.86);
}
.page-about__honor-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--red);
  border-radius: 1px;
  transform: rotate(45deg);
}
.page-about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-4);
}
.page-about__stat {
  background: rgba(245, 239, 230, 0.07);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-m);
  padding: var(--space-2) var(--space-3);
  transition: background 0.3s var(--ease-standard), transform 0.3s var(--ease-standard);
}
.page-about__stat:hover {
  background: rgba(245, 239, 230, 0.12);
  transform: translateY(-2px);
}
.page-about__section--honors .c-stat__value {
  color: var(--orange);
  font-size: 36px;
  font-weight: 800;
  line-height: 1.1;
  font-family: var(--font-display);
}
.page-about__section--honors .c-stat__label {
  color: rgba(245, 239, 230, 0.7);
}

/* ---------- 合作生态 ---------- */
.page-about__ecosystem-lead {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}
.page-about__section--ecosystem p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink);
}
.page-about__ecosystem-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}
.page-about__concentric {
  position: relative;
  width: 100%;
  max-width: var(--page-concentric-w);
  margin: var(--space-4) auto 0;
  aspect-ratio: 1 / 1;
}
.page-about__concentric-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 92%;
  height: 92%;
  border: 1px solid var(--line);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.page-about__concentric-ring--inner {
  width: 58%;
  height: 58%;
  border-style: dashed;
  background: radial-gradient(circle, rgba(27, 58, 91, 0.05) 0, transparent 70%);
}
.page-about__concentric-core {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  display: flex;
  width: 36%;
  aspect-ratio: 1 / 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background:
    radial-gradient(circle at 72% 22%, rgba(231, 122, 46, 0.18) 0, transparent 42%),
    var(--night-blue);
  color: var(--cream);
  text-align: center;
  box-shadow: var(--shadow-glow);
  transform: translate(-50%, -50%);
}
.page-about__concentric-brand {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--cream);
}
.page-about__concentric-caption {
  margin-top: 4px;
  font-size: 12px;
  color: rgba(245, 239, 230, 0.66);
}
.page-about__concentric-node {
  position: absolute;
  z-index: 3;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--cream);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  box-shadow: var(--shadow-card);
}
.page-about__concentric-node--top {
  left: 50%;
  top: 5%;
  transform: translateX(-50%);
}
.page-about__concentric-node--right {
  right: 3%;
  top: 50%;
  transform: translateY(-50%);
}
.page-about__concentric-node--bottom {
  left: 50%;
  bottom: 5%;
  transform: translateX(-50%);
}
.page-about__concentric-node--left {
  left: 3%;
  top: 50%;
  transform: translateY(-50%);
}

/* ---------- 页内 CTA ---------- */
.page-about__cta {
  padding: 0 0 var(--space-6);
}
.page-about__cta-inner {
  position: relative;
  padding: var(--space-5) var(--space-4);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--cream);
  text-align: center;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.page-about__cta-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--orange) 60%, transparent);
}
.page-about__cta-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink);
}
.page-about__cta-text {
  margin: 0 auto;
  max-width: 420px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mid-brown);
}
.page-about__cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

/* ---------- 媒体查询：≥768px ---------- */
@media (min-width: 768px) {
  .page-about__hero {
    min-height: 88vh;
  }
  .page-about__hero-actions {
    gap: var(--space-3);
  }

  .page-about__section {
    padding: var(--space-6) 0;
  }

  .page-about__timeline {
    flex-direction: row;
    align-items: stretch;
    padding: var(--space-5) var(--page-gutter);
    overflow-x: auto;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }
  .page-about__timeline-item {
    flex: 0 0 230px;
    scroll-snap-align: start;
  }

  .page-about__roles {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about__stats {
    gap: var(--space-3);
  }
  .page-about__stat {
    padding: var(--space-3);
  }

  .page-about__honor-figure {
    margin-bottom: 0;
  }

  .page-about__concentric {
    margin-top: 0;
  }
}

/* ---------- 媒体查询：≥1024px ---------- */
@media (min-width: 1024px) {
  .page-about__hero-container {
    padding-top: var(--space-3);
  }
  .page-about__lead {
    font-size: 18px;
  }
  .page-about__story-grid .c-grid__span-4,
  .page-about__team-grid .c-grid__span-4 {
    padding-right: var(--space-4);
  }
  .page-about__concentric {
    margin-left: auto;
    margin-right: auto;
  }
  .page-about__ecosystem-actions {
    margin-top: var(--space-5);
  }
}